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NERC PRACTICE EXAM LATEST UPDATE 2026-2027
WITH (2 VERSIONS) COMPLETE 300 QUESTIONS
AND CORRECT VERIFIED SOLUTIONS JUST
RELEASED
(REVIEW DIAGRAM #4)
Which of the following would be an impact on the ring bus and lines?
A. Line 1 would be the only de-energized line from this station
B. Line 4 would be de-energized from this station
Line 4 would be de-energized from this station
(REVIEW DIAGRAM #5)
Which of the following statements identifies what the impacts would be if Line 1 trips out of
service?
A. Generator 1 would reduce its output
B. the flow on Line 2 would increase
the flow on Line 2 would increase
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(REVIEW DIAGRAM #6)
If the MW loading on Line 1 is flowing from Bus 1 to Bus 4, which of the following generation
adjustments would have the greatest impact in reducing the Line 1 loading?
A. increase GEN 1 and reduce GEN 3
B. reduce GEN 1 and increase GEN 3
reduce GEN 1 and increase GEN 3
(REVIEW DIAGRAM #7)
Gen 1 is currently putting out 1,000 MW and Gen 2 is offline. Based on the distribution
factors, 40% of the output flows on line 1 and 30% of the output flows on each Line 2 and Line
3. If the LODF for the loss of line 1 are .5 for Line 2 and .5 for line 3, what would the new flow
be on Line 2 or Line 3 if Line 1 trips?
A. 300 MW
B. 400 MW
C. 500 MW
D. 600 MW
500 MW
(REVIEW DIAGRAM #8)
What would the impedance be for the circuit that has an AC voltage source and a resistance
of 30 ohms, inductive reactance of 80 ohms, and a capacitive reactance of 70 ohms?
A. 11.4 Ω
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B. 31.6 Ω
C. 73.2 Ω
D. 152.9 Ω
31.6 Ω
(REVIEW DIAGRAM #9)
If there was a low voltage situation in the area of Bus 2, which of the following actions would
be the first action to assist in increasing the voltage?
A. reducing load at LOAD 5
B. reducing MVAR output on GEN 3
C. reducing load at LOAD 4
D. increasing the MVAR output GEN 2
increasing the MVAR output GEN 2
(REVIEW DIAGRAM #10)
Line 1, Line 2, and Line 3 all have identical impedances. With Line 3 out of service, the flow
from Station A to Station B is 60 MW on Line 1 and 60 MW on Line 2, if Line 3 is returned to
service, what would be the MW loading on Line 1?
A. 30 MW
B. 40 MW
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C. 60 MW
D. 120 MW
40 MW
(REVIEW DIAGRAM #11)
Generator 2 is currently putting out 100 MW and there is 100 MW coming into Station A from
System Z. Line 1 has a DF of .4, Line 2 has a DF of .3, and Line 3 has a DF of .3. What would be
the flow on line 1?
A. 40 MW
B. 60 MW
C. 80 MW
D. 120 MW
80 MW
(REVIEW DIAGRAM #12)
What would the impedance be for the circuit that has an AC voltage source and a resistance
of 40 ohms, inductive reactance of 1.13 ohms, and a capacitive reactance of 531 ohms?
A. 382 Ω
B. 465 Ω
C. 531 Ω
D. 627 Ω
4
SUCCESS!
NERC PRACTICE EXAM LATEST UPDATE 2026-2027
WITH (2 VERSIONS) COMPLETE 300 QUESTIONS
AND CORRECT VERIFIED SOLUTIONS JUST
RELEASED
(REVIEW DIAGRAM #4)
Which of the following would be an impact on the ring bus and lines?
A. Line 1 would be the only de-energized line from this station
B. Line 4 would be de-energized from this station
Line 4 would be de-energized from this station
(REVIEW DIAGRAM #5)
Which of the following statements identifies what the impacts would be if Line 1 trips out of
service?
A. Generator 1 would reduce its output
B. the flow on Line 2 would increase
the flow on Line 2 would increase
1
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(REVIEW DIAGRAM #6)
If the MW loading on Line 1 is flowing from Bus 1 to Bus 4, which of the following generation
adjustments would have the greatest impact in reducing the Line 1 loading?
A. increase GEN 1 and reduce GEN 3
B. reduce GEN 1 and increase GEN 3
reduce GEN 1 and increase GEN 3
(REVIEW DIAGRAM #7)
Gen 1 is currently putting out 1,000 MW and Gen 2 is offline. Based on the distribution
factors, 40% of the output flows on line 1 and 30% of the output flows on each Line 2 and Line
3. If the LODF for the loss of line 1 are .5 for Line 2 and .5 for line 3, what would the new flow
be on Line 2 or Line 3 if Line 1 trips?
A. 300 MW
B. 400 MW
C. 500 MW
D. 600 MW
500 MW
(REVIEW DIAGRAM #8)
What would the impedance be for the circuit that has an AC voltage source and a resistance
of 30 ohms, inductive reactance of 80 ohms, and a capacitive reactance of 70 ohms?
A. 11.4 Ω
2
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B. 31.6 Ω
C. 73.2 Ω
D. 152.9 Ω
31.6 Ω
(REVIEW DIAGRAM #9)
If there was a low voltage situation in the area of Bus 2, which of the following actions would
be the first action to assist in increasing the voltage?
A. reducing load at LOAD 5
B. reducing MVAR output on GEN 3
C. reducing load at LOAD 4
D. increasing the MVAR output GEN 2
increasing the MVAR output GEN 2
(REVIEW DIAGRAM #10)
Line 1, Line 2, and Line 3 all have identical impedances. With Line 3 out of service, the flow
from Station A to Station B is 60 MW on Line 1 and 60 MW on Line 2, if Line 3 is returned to
service, what would be the MW loading on Line 1?
A. 30 MW
B. 40 MW
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C. 60 MW
D. 120 MW
40 MW
(REVIEW DIAGRAM #11)
Generator 2 is currently putting out 100 MW and there is 100 MW coming into Station A from
System Z. Line 1 has a DF of .4, Line 2 has a DF of .3, and Line 3 has a DF of .3. What would be
the flow on line 1?
A. 40 MW
B. 60 MW
C. 80 MW
D. 120 MW
80 MW
(REVIEW DIAGRAM #12)
What would the impedance be for the circuit that has an AC voltage source and a resistance
of 40 ohms, inductive reactance of 1.13 ohms, and a capacitive reactance of 531 ohms?
A. 382 Ω
B. 465 Ω
C. 531 Ω
D. 627 Ω
4
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